Electric-arc lamp.



No. 740,132. l PATBNTED SEPT. 29, 1903.

- LA. HEANY.

ELEGTRIG ARG LAMP.

APPLIQATIQN, FILED JAN. 7, 19,03.

N0 MODEL. 43 SHEETS-SHEET 1.

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PATENTED SEPT. 29, 1903.

J. A. HEANY. ELECTRIC ARG LAMP. APPLICATION FILED JAN. 7, 1903.

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No MODEL.

PATENTED SEPT. 29, 1903.

.LAE-EAM. ELECTRIC-ARG LAMP.

APPLICATION FILED JAN: 7, 1903.

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UNITED STATES Patented September 29, 1903.

PATENT OEEICEQ JOHN ALLEN HEANY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO vTHE TETER-HEANY-DEVELOPING COMPANY, OF CHARLESTON, WEST VIRGINIA, AND PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF lVEST VIRGINIA.

SPECIFICATION forming part of Letters Patent No. 740,132, dated September 29, 1903. Application lecl (Iaiinary 7, 1903. Serial No. 138,108. (No model.)

To all whom it may concern.-

Be it known that I, JOHN ALLEN HEANY, a citizen of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Electric-Arc Lamps, of which the following is a specification.

My invention has relation to that class of arc-lamps in which the arc is preferably maintained within a small and practically-sealed globe; and in such connection it relates to the construction and arrangement of the parts constituting such an arc-lamp.

The nature and scope of my invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, in which- Figure l is a view, partly irl-section and partly in front elevation, of an electric-arc lamp embodying main features of my invention. Fig. 2 is a vertical sectional view taken at a right angle to Fig; l. Fig. 3 is a horizontal sectional view, enlarged, illustrating in top plan view the base of the arc-lamp. Fig. A is a horizontal sectional view, enlarged, illustrating in top plan view a base-plate adapted to support the inner globe and a holder for the outer globe. Fig. 5 is a horizontal sectional view, enlarged, taken on the line a: a: of Fig. 2; and Fig. 6 is a detail view,

enlarged, illustrating ,in top plan view a' bracket for the solenoid-coil, which may be readily connected to and disconnected from the framework of the lamp.

Referring to the drawings, A represents the base, consisting of a centrally-contracted or body portion a, from which extend upwardly and downwardly projecting lianges a and a2. The central body portion a and flanges a and a2 of the base-plate A may either consist of a double casting, as shown, or of a single casting or stamped up device. To the lower ilange a2 of the base A by means of screws a3 is secured a base-plate b, which is held a certain distance from the base A by sleeves 0,4, surrounding the screws CL3, as shown in Fig. 2. Against the lower face of the base-plate b by means not shown is held the inner globe plate b serves as a support for ya clutch'l,

which engages the upper carbon d and is provided with an insulating-disk b', preferably of mica, to properlyinsulate the clutch e froml the base-plate b. The supporting-screws a3 for the base-plate b engage, preferably, ra dially-projecting arms or lugs bf of the same, which also serve as a support for a globe-holder f, as shown in Figs. 2 and 4. The globe-holder f by means of screws f2 is removably secured to the lugs b2 and is provided with a downwardly-projecting flange f which fits over the upper open end of the outer globe g and supports the same by means of screws f3. Between the lugs b2 of the base-plate b and the globe-holder f are formed openings g', which permit the air heated in the space g2 between the inner and outer globes c and g to readily escape into the outer atmospherical air by passing through an annular opening g3, arranged between the globe-holder f and the verticalprojecting riin a5 of the iiange a2 of the base A. By loosening the screws f3 the outer globe g may be readily disconnected from the globeholderfand the inner globe c made accessible for the removal and insertion of the carbons d and d. The upper iiange a of the base A is provided with vertically-projecting rods o, normally engaging the tubes h, secured to a frame h'. The frame h is provided with a tubular extension h2, forming a seat for the upper end of a tube c', surrounding and guiding the upper carbon d', which tube t' loosely engages an insulating-washer h3, located in the end of the tubular eXtension h2 of the frame h, so as to properly insulate the same from the said frame h. The lower threaded end of the tube c' is screwed into an insulating-sleeve a7, arranged in the body portion ct of the base A, and is securely IOO clamped thereto by means of a plate t" and a nut 012, insulated from the portion a. The threaded contracted portion h4 of the extension h2 carries a cap Z5, which by means of bolts or screws 7a2 supports a casing or housing Zt', inclosing the upper portion of the lamp in such a manner as that air entering the lower open end of the casing 7c' may readily escape at the upper end through an annular opening 7a3, arranged between the downwardly-projecting rim of the cap 7c and the casing or housing Z3. To the threaded portion h4 of the extension h2 of the frame h is secured in the usual manner a hook or ring, (not shown,) by means of which the lamp may be suspended from the ceilingof a building or from any other suitable support. The frame h', with its extensions h2 and h4 and tubes h, forms, in conjunction with the rods a"',the tube t', and the flange a of the base A, the framework B of the lamp. This framework is securely connected to the base A by means of connecting-screws h5, passing through the tubes Zt, and the rods a6, loosely mounted therein, as shown in Figs. 2 and 3. Vithin the tube 'L' is slidably arranged a cap or holder i3, adapted to receive in its interior the upper end of the movable carbon CZ'. The holder 72S is provided with a binding-post 4, passing through a slot t5, arranged in the tube t', to which post a Wire lis secured, which conducts the electric current into the holder 3 andcarbons d and d and through the holder Z2 to a wire 2, from which the same may pass in an opposite direction to the wire l, and so close the circuit through the cai-bons. In order to utilize the whole length of the tube 1,' for the reception of the upper carbon CZ', the tubular extension h2 of the frame h is provided with a slot h6, which permits the holder @of the carbon d to rise to the upper end of the tube fi and in this manner to permit of the use of a carbon of an exceptional length in respect to size of the lamp. The clutch e, engaging the carbon CZ', is actuated by a rod e, passing through an opening a9, arranged in the body portion a of the base A, and through a plate t" serves as a clamping-nut for the tube and ending in a guide 726, composed, preferably, of insulating material partially surrounding the tube t' and slidably arranged thereon. The clutch-rod e preferably passes loosely through asolenoid-core Z, the arms Z and Z2 of which engage the solenoid-coils m and m', which when energized by an electric current draw the arms Z and Z2 into the same and in such a well-known manner actuates the rod e and clutch e and raises the upper carbon d from the lower carbon to form the electric arc between the same. In order to check the rapid upward movement of the core Z, clutch e, and carbon (Z, to the rod e is adjustably clamped an arm e2, engaging a dash-pot it of well-known construction, which in conjunction with the springs e3 and e4, arranged between the arm e2 and core Z and between the same and a plate @5,secured to the rod e, retards arapid upward movement. As shownin Figs. 2 and 3, the contracted lower end n' of the dash-pot n is engaged by a clamp n2, which surrounds a stud as of the base A, into which one of the rods a6 is secured. The clamp n2 by means of an insulating-ringn3 is insulated from the stud as and can be' readily clamped thereon, as well as to the dash-pot n, by a bolt n4, passing through the clamp n2, which by means of a nut a5 draws the central portion of the clamp n2 together. By loosening the nut 'n the end n of the dash-pot n may be readily disengaged from the clamp By the above-described arrangement and construction of the framework B of the lamp the lower portion and globes c and g, base A, as Well as the tube 7l for the upper carbon CZ', the solenoid-core Z, clutch-rod e', clutch e, dash-potra, and rods a6 may be readily disconnected from the frame h' and its tubes Z2, by

disengaging the screws h5 from the tubes Zt and the rods 0L for repairs or cleaning of the Working parts of the lamp, as shown in dotted lines in Fig. 2. At the same time the lamp may be readily assembled, in which instance the rods 0,6 are shifted back into the tubes hand the carbon-tube t' into the extension h2 of the frame h. In order to also permit the ready disengagement of the solenoidcoils m and m from their supporting-tube Zt, the coils at their upper and lower ends are provided with brackets m2, having a looplike extension mi, surrounding the tube h in a semicircular form. Each of the brackets m2 is securely clamped to the supportingtube Zt by means ol a screw m4, provided with a conical-shaped end mfwhich engages the tube h, as shown in Fig. 6, and which by advancing on the tube Zt produces the necessary friction to hold the solenoid-coils in any given position. At the same time these clampingscrews m5, in conjunction with the brackets m2, form the means of readily disengaging the solenoid-coils m and m from the framework B of the lamp.

The frame h' of the framework B of the lamp, with its extension h2, affords a ready means of support of either a resistance-coil or a choke-coil, so that the lamp, as described and shown, may be used either as a directcurrent lamp or as an alternating-current lamp.

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In an electric-arc lamp, a base having dome-shaped upper and lower flanges, a baseplate suspended from the lower dome-shaped liange, an outer and an inner globe carried by said plate, a series of rods carried by the upper dome-shaped flange, a carbon-tube centrally secured at its lower end in said base intermediate of said flanges, a frame adapted to detachably engage the upper end of said carbon-tube, and a series of tubes carried by said frame and adapted to detachably engage the rods of said upper dome-shaped flange.

IOO

IIO

2. In an electric-arc lamp, a base having an upwardly and a downwardly projecting flange, a base-plate suspended from the downwardly-projecting flange, an inner and an outer globe carried by said base-plate, a series of rods carried by the upwardly-projecting llange, a carbon-tube secured atits lower end in said base, a frame having an extension adapted to engage the upper end of said carbon-tube, a series of tubes carried by said frame and adapted to loosely engage the series of rods of the upwardly-projecting flange, said flange, rods, tubes, frame and carbontube constituting the upper framework of the lamp.

3. In an electric-arc lamp, a base having an upwardly and a downwardly projecting flange, a series of rods projecting from the upwardly-projecting flange, a frame, a series of tubes suspended from said frame and engaging said rods, and means adapted to detachably connect saidtubes with said rods.

4. In an electric-arc lamp, a base having an upwardly and a downwardly projecting dome-shaped lian ge, a series of rods projecting from the upwardly-projecting dome-shaped flange, a carbon-tube secured in said base intermediate of said flanges, and a dash-pot detachably secured to the upwardly-projecting dome-shaped flange of said base.

5. In an electric-arc lamp, a base having an upwardly and a downwardly projecting j flange, a series of rods projecting from the upwardly-projecting flange, a carbon-tube centrally secured in the body portion of said base, a dash-pot, means for detachably connecting said dash-pot with the upwardly-projecting llange, a frame adapted to detachably engage said carbon-tube, a series of' tubes secured to said frame and adapted to detachably engage said rods, a solenoid-coil, and means adapted to adj ustably and detachabl y connect said coil with one of said tubes.

6. In an electric-arc lamp, a base having flanges upwardly and downwardly projecting therefrom, a base-plate suspended from the lower one or" said flanges and adapted to support an outer and an inner globe, a series of tubes projecting from the upper one vof said flanges, a carbon-tube arranged centrally in said base, a frame` having a series of tubes, said frame adapted to detachably engage said carbon-tube and said tubes adapted to detachably engage said rods.

7. In an electric-arc lamp, a base having flanges upwardly and downwardly projecting therefrom, a base-plate suspended from the lower one of said flanges and adapted to support an outer and an inner globe, a series of tubes upwardly projecting from the upper one of said llanges, a carbon-tube centrally arranged in said base, a frame having a series of tubes suspended therefrom, said frame adapted to engage said carbon-tube and said tubes adapted to engage said series of rods, a clutch-rod, a clutch actuated by said rod, a solenoid-core, and a dash-pot, said base-plate, globes, rods, carbon-tube, clutch-rod, solenoid-core and dash-pot so arranged as to be readily detachable from said frame and its tubes.

8. In an electric-arc lamp, a base having (langes, upwardly anddownwardly projecting therefrom, a base-plate carried by the lower one of said flanges, an inner globe adapted to be carried by said base-plate, a globe-holder and outer globe adapted to be supported by said base-plate so as to form air-outlets between the base-plate, outer globe, globe-holder and the lower of said flanges, rods carried by the upper one of said flanges, a frame having tubes engaging said A rods, a cap adapted to be supported by said frame, a housing projecting below the upper one of said flanges and connected with said cap so as to form an air-outlet between said cap and housing.

9. In an electric-arc lamp, having a base, a slotted carbon-tube arranged in said base, a frame having a slotted extension engaging said carbon-tube, a carbon-holder arranged within said carbon-tube and movable therein, and a binding-post connected with said carbon-holder and passing through the slot of said carbon-tube and adapted to be afforded a range of movement in said slot and within the extension of said frame.

lO. In an electric-arc lamp, a base, a se- IOC 

